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64504741 = 725136713
BaseRepresentation
bin1111011000010…
…0001110100101
311111101011212111
43312010032211
5113003122431
610222321021
71412165320
oct366041645
9144334774
1064504741
1133458404
1219729171
13104964b2
1487d17b7
1559e27b1
hex3d843a5

64504741 has 8 divisors (see below), whose sum is σ = 74015424. Its totient is φ = 55068000.

The previous prime is 64504723. The next prime is 64504747. The reversal of 64504741 is 14740546.

64504741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64504741 - 219 = 63980453 is a prime.

It is a super-2 number, since 2×645047412 = 8321723222954162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64504747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16600 + ... + 20113.

It is an arithmetic number, because the mean of its divisors is an integer number (9251928).

Almost surely, 264504741 is an apocalyptic number.

It is an amenable number.

64504741 is a deficient number, since it is larger than the sum of its proper divisors (9510683).

64504741 is a wasteful number, since it uses less digits than its factorization.

64504741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36971.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 64504741 is about 8031.4843584483. The cubic root of 64504741 is about 401.0487914379.

The spelling of 64504741 in words is "sixty-four million, five hundred four thousand, seven hundred forty-one".

Divisors: 1 7 251 1757 36713 256991 9214963 64504741